Alain Brécourt, a former pilot who distinguished himself during the war, meets Françoise Clozat, a test pilot. They become lovers, but Françoise learns that Alain is married to a singer. Françoise despairs, but Alain proves to her that he has been living away from his wife for some time. She meets the singer, no longer believes Alain, and attempts suicide during a flight. Her instinct for self-preservation saves her. Alain is the first to turn his attention to her: when she opens her eyes again, she receives the assurance of his love.